Most Rhino materials plain white

Rendering
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1

Hi everyone, so I checked my folders in AppData and I have the materials in the Render Content folders, all in Rmtl file. But as you can see in the pic they dont work when I apply them, only some do as you can see at the base of the object. I tried importing the selected one by pressing Import from material Library but it stays the same.

What could possibly be the cause for this?

rhino
rhino1878×983 315 KB

2

It appears the material properties themselves are coming through as I see different values represented for reflection for instance but my guess is the issue lies with the folder containing the diffuse/albedo maps for these materials.

Can you please go to edit one of these materials and see what is listed in the Diffuse slot (if anything)